EEMCS

Pollnau, M. and Gamelin, D.R. and Lüthi, S.R. and Güdel, H.U. and Hehlen, M.P. (2000) Power dependence of upconversion luminescence in lanthanide and transition-metal-ion systems. Physical review B: Condensed matter and materials physics, 61 (5). pp. 3337-3346. ISSN 0163-1829

Lüthi, S.R. and Pollnau, M. and Güdel, H.U. and Hehlen, M.P. (1999) Near-infrared to visible upconversion in Er³⁺ doped Cs₃Lu₂Cl₉, Cs₃Lu₂Br₉, and Cs₃Y₂I₉ excited at 1.54 µm Physical review B: Condensed matter and materials physics, 60 (1). pp. 162-178. ISSN 0163-1829